[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-31717":3,"doc-seo-31717":27},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"file_id":15,"file_url":16,"file_type":17,"file_size":18,"view_count":4,"is_deleted":4,"is_public":19,"is_downloadable":19,"audit_status":19,"page_count":20,"language":21,"language_code":22,"table_of_contents":23,"faqs":24,"seo_title":13,"seo_description":14,"update_tm":25,"read_time":26},31717,7971461740909,"Levi","https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d",8,"Research & Report","Pyrolytic Depolymerization of Polyolefins Catalysed by Zirconium Based UiO-66 Metal–Organic Frameworks","Zirconium-based UiO-66 metal–organic frameworks are investigated as catalysts for the pyrolytic depolymerization of polyolefins under typical pyrolysis conditions (about 400–900 °C). The work explains how Zr species, structurally reminiscent of Ziegler–Natta catalysts, promote C–C bond cleavage via β-alkyl elimination, aiming to improve liquid and gas yields while suppressing unproductive char formation. The study addresses why MOFs are often overlooked in pyrolysis despite their designable active sites and high porosity.","cbCairsGm0eRG9TK","https://ap.wps.com/l/cbCairsGm0eRG9TK","pdf",1399113,1,10,"English","en","# Introduction\n## Pyrolysis and catalyst roles\n## MOFs as heterogeneous catalysts\n# UiO-66 as the targeted zirconium MOF\n## Proposed mechanism and catalytic performance","[{\"question\":\"Why are zirconium-based catalysts considered promising for polyolefin depolymerization?\",\"answer\":\"Zirconium species resemble Ziegler–Natta catalysts and are proposed to promote C–C bond cleavage through β-alkyl elimination, enabling depolymerization pathways different from acid-catalyzed carbocation mechanisms.\"},{\"question\":\"What advantages do MOFs offer compared with zeolites or purely inorganic catalysts?\",\"answer\":\"MOFs combine large internal surface areas and chemical designability, with isoreticular synthesis enabling tuning of catalytic active sites and pore sizes; they also offer higher porosity than zeolites.\"},{\"question\":\"What challenges have limited MOF use in pyrolysis, according to the text?\",\"answer\":\"MOFs are commonly viewed as thermally unstable (decomposing near ~500 °C) and polymers may have low diffusivity, preventing entry into MOF pores from the polymer melt; few examples exist for polymer degradation within MOFs.\"}]",1780002094,25,{"code":4,"msg":28,"data":29},"ok",{"site_id":30,"language":22,"slug":31,"title":13,"keywords":32,"description":14,"schema_data":33,"social_meta":84,"head_meta":86,"extra_data":88,"updated_unix":25},105,"pyrolytic-depolymerization-of-polyolefins-catalysed-by-zirconium-based-uio-66-metalorganic-frameworks","",{"@graph":34,"@context":83},[35,52,66],{"@type":36,"itemListElement":37},"BreadcrumbList",[38,42,46,49],{"item":39,"name":40,"@type":41,"position":19},"https://docshare.wps.com","Home","ListItem",{"item":43,"name":44,"@type":41,"position":45},"https://docshare.wps.com/document/","Document",2,{"item":47,"name":12,"@type":41,"position":48},"https://docshare.wps.com/document/research-report/",3,{"item":50,"name":13,"@type":41,"position":51},"https://docshare.wps.com/document/pyrolytic-depolymerization-of-polyolefins-catalysed-by-zirconium-based-uio-66-metalorganic-frameworks/31717/",4,{"url":50,"name":13,"@type":53,"author":54,"headline":13,"publisher":56,"fileFormat":59,"description":14,"dateModified":60,"datePublished":60,"encodingFormat":59,"isAccessibleForFree":61,"interactionStatistic":62},"DigitalDocument",{"name":9,"@type":55},"Person",{"url":39,"name":57,"@type":58},"DocShare","Organization","application/pdf","2026-05-28",true,{"@type":63,"interactionType":64,"userInteractionCount":4},"InteractionCounter",{"@type":65},"ViewAction",{"@type":67,"mainEntity":68},"FAQPage",[69,75,79],{"name":70,"@type":71,"acceptedAnswer":72},"Why are zirconium-based catalysts considered promising for polyolefin depolymerization?","Question",{"text":73,"@type":74},"Zirconium species resemble Ziegler–Natta catalysts and are proposed to promote C–C bond cleavage through β-alkyl elimination, enabling depolymerization pathways different from acid-catalyzed carbocation mechanisms.","Answer",{"name":76,"@type":71,"acceptedAnswer":77},"What advantages do MOFs offer compared with zeolites or purely inorganic catalysts?",{"text":78,"@type":74},"MOFs combine large internal surface areas and chemical designability, with isoreticular synthesis enabling tuning of catalytic active sites and pore sizes; they also offer higher porosity than zeolites.",{"name":80,"@type":71,"acceptedAnswer":81},"What challenges have limited MOF use in pyrolysis, according to the text?",{"text":82,"@type":74},"MOFs are commonly viewed as thermally unstable (decomposing near ~500 °C) and polymers may have low diffusivity, preventing entry into MOF pores from the polymer melt; few examples exist for polymer degradation within MOFs.","https://schema.org",{"og:url":50,"og:type":85,"og:title":13,"og:site_name":57,"og:description":14},"article",{"robots":87,"canonical":50},"index,follow",{"doc_id":7,"site_id":30}]